Improvement in locks for sewing-machine cases



@wat definire.,

H. 0. NAUEN, OF

NEW Yoan, N. Y.'-

Letters Patent No. 98,616, dated January 4, 1870.

IMIRO'V'EMENT IN LOCKS FOR SEWING-MACHINE CASES.

The Schedule `referred to in these Letters Patent and making part of the same.

To all whom it may concern.-

Be it, known that l, H. O. NAUEN, of the city, county, and State of New York, have invented a new and useful Improvement in Lock for Sewing-Machine Gases; and I do hereby declare the following to be a full, clear, and exact description thereof, which will enable those skilled in the, art .to make and usethe same, reference being had to the accompanying drawing, forming part of this specication, in which drawlng- Figure 1 represents a transverse section of this in vention.

Figure 2 is a longitudinal section thereof.

Similar letters indicate corresponding parts.

This invention relates to a locking-device for the case of a sewing-machine, said locking-device being composed principally of a catch or latch, capable ot' .catching under the cloth-plate of the sewing-machine, 'fand of lugs attached to the interior of the case, opposite the latch, and catching under some fixed part of the sewing-machine, in such a manner, that when the case is put on, and the catch "is locked, it forms a secure protection for the sewing-machine, and when the catch is unlocked, the case can be lifted off clear of the table, and the' surface of the table remains unbroken, no hole or mortise being required therein for the purpose of receiving and retaining the catch or latch. The catch or latch is operated bya cam, secured to a revolving arbor, which is operated by a key, s o that by turning said arbor, the catch is brought in its locking or unlocking position, as may bedesired.

The case which serves to cover up the sewing-machine is provided with a shoulder, capable of o v'erlap ping the edge of the lid of the thread and tool-box, usually secured to the top of the sewing-machine table, in such a manner, that by locking the case down, the lid of the threadv and tool-box is also locked, and one and the same locking-device serves to fasten both the case and the thread and tool-box.

In the drawing- The letter A represents the tableon which vis secured the sewing-machine B, and the thread and toolbox D is the case which sei-ves to cover up the sewingmachine. 4

This case is made entirely detached from the table A, and it is lockedfdown bymeans of a spring-catch or latch, G, which catches under the edge of the cloth-plate a, and, by one or more lugs, a', secured to .the interior ofthe case, opposite the latch, and catching under the screws b', or under'any other fixed part of the sewing-machine, asshown in g. 2 ofthe drawing.

The spring-catch or latch is operated by a cam, b, which is secured to the inner end of an arbor, c, to which a revolving motion can be imparted by a key, d.

By turning the camb to the position shown in iig. 2, the cat-ch or latch is caused to engage with the edge of the cloth-plate n., and the case is rmly held in posit-ion, and by giving to the camAhalf a turn, the catch or latch'is allowed to follow the action of its inherent elasticity, or to the action of an independent spring, acting thereon, and the case D becomes unlocked.

When unlocked, said case can be lifted otf'clear of the table A, so that it does in no wise interfere in the operation of sewing.

The case D is provided with a shoulder, c, which, when said case is in position, overlaps the edge of the lip f, of the thread and tool-box E. 1f the case D is locked down to the table A, therefore, the lid f is also locked, and the contents of the thread. and tool-box are protected against being meddled with by unauthorized persons. l

By these means, the case D can be: locked down upon the table, without marring the surface of said table by a hole or mortise, and the locking-device is always in working-order, no mortise being there which is liable to fill up with dust, and, furthermore, the same catch or iatch which serves to lock the case, also serves to fasten the lid of the thread and tool-box.

What I claim as new, anqd desire to secure by Letf,`

ters Patent, is-= 1. The arrangement, within the case D, of the springcatch, to engage with the cloth-plate of a sewing-machine, in combination with the cam b, the parts operating together, vsubstantially as described.

2. S0 arranging the case D that its shoulder e locks the tool-box, which is overlapped by it, all as and for the purpose described.

This specification 'signed .by me, this 8th day of November, 1869.

H. O. NAUEN.

Witnesses:

W. HAUFF,

E. F. KASTENHUBER. 

